东营凹陷通王构造带孔店组地层型油藏的发现及成藏特征

王156油藏孔一下三砂组超覆型油层的钻遇标志着东营凹陷南坡东部孔店组地层油藏的突破。在钻井、地震和地化研究基础上,分析了王156油藏的原油、储层、油源、输导体系等特征,通过对不整合类型、超覆坡折带角度、沉积特征和侧向封堵性等控藏因素分析,认为王156为超覆型油藏,有利储集相带为滩坝和漫湖三角洲前缘砂体,有利坡折带角度为15°~30°,有利遮挡层为泥岩、砂质泥岩和凝灰岩。

Discovery of Stratigraphic Reservoir and Oil Accumulation Feature in Kongdian Formation of Tongwang Fault Belt in Dongying Sag

The drilling of overlap oil layers in the third sand group in E1k1^3 in well Wang156 signals the discovery of stratigraphic oil reservoir in E1k in the east of south slope in Dongying Sag. Based on the data of the drilling, seismic and geochemistry, the character of the oil, reservoir, oil source and migration were introduced in detail, and some in fluential factors such as the types of unconformity, the angles and and the lateral sealing of the slope under E1k and the sedimentary character were studied. The findings include： the type of reservoir in Wang 156 is overlap reservoir; the facies of reservoir are beach bars and delta front sandbodies;the better angles of slope-break zone are 15°-30°：the fine barrier are mudstone,silty mudstone and tuff.